Ventilated helmet.



G. B. SPARKS.

VENTILATED HELMET.

APPLIOATION FILED D30. 27, 1912.

1,1 13,062. Patented 00t.6,1914.

2 SHEETS-SHE1JT 1.

wi/tweoow G. B. SPARKS.

VENTILATED HELMET.

APPLIOATION FILED DBO.27,1912.

1,113,062. Patented 0011.6, 1914.

2 SHEETS-SHBET 2.

BEE- George; BJSjfMmJZ-S T all whom it may concern:

shell roughly resembling, and of a size to fit over the human head to leave ample space i glass 0 which is band C having a lining D of'some suitable soft material, such as leather. to prevent- UNITED s'r.

GEORGE SPARKS, 0E WOODBURY, NEW JERSEY.

*sists of the parts and combinations of parts ATEs PATENT OFFICE.

VENTTLATED HELMET.

Specification of Letters Patent.

' Be it'known that I. GEORGE B.---Sr \mis, a citizen of the ['nited States, residing at Woodbury, in the county ofGloucester and State of Xew J er'sey, have invented a certain new and useful Ventilated Helmet, of which the following is a' Specification.

This invention relates to helmets for workmen employed in confined spaces containing impure air, gases. or dust. which are injurious to breathe. and it has for its object to provide a simple, comparativelxinexpensive. and durable apparatus adapted to be readily applied to the person and to supply fresh air in a constant stream, or as it may be needed, and to deliver the same without inconvenience to the wearer. and it conhereinafter described and claimed. a In the accompanying drawings forming a part of this specification Figure 1 is a front elevation'of my improved helmet. Fig. 2 is a vertical section on the line 2-2, Fig. 1. Fig. 3 is a detail plan view of the head piece. Fig. 4 is a horizontal section onthe line l-i. Fig. 1. Fig. 5 is a detail front ele ation of the head piece. I

Similar letters 'refer throughout all the views. 1

Referring to the drawings A represents the helmet.-propep, which consists of a thin to similar parts the doorway.

at all points about the same. In the shell an opening is formed at one side thereof g which extends from the base or bottom of I r the shell sufiiciently high and wide to readily admit the wearers head. The opening is closed by'adoor B which is hinged to. the shell and carries a latch a for engagement with a notch b. The door Bis filleclwith secured air-tight in place, as by a gasket :1 around its edges. Within the shell is secured a head piece which rests on the head of the wearer when the helmet is in place. The head piece consists of a metal chafing, the ends of said band being free and overlapped and one end carrying a hook 0 adapted to enter perforations f formedjn the other end. The band is connected by curved metal strips E, extending longitudinally and transversely, which rest on the ported in the shell by a suitable number of spiral springs 9 attached at one end to the band and at the other to the shell. The head piece may be adjusted to fit the head by drawing the ends of the band past each other and securing the same in their adjusted position by catching the hook e in one of the perforations f.

From the above description it will be anderstood that the attachment of the headpiece to the shell. by means of springs permits of a free movement of the head within the helmet and also gives greater ease and comfortto the wearer sincethe helmet shell 15 supported away from the head and any blows or shocks received by the latter are not transmitted to the head At one side of the shell near the doorway a pipe F enters the helmet and'the point of entrance thereof is made air-tight in any preferred manner. The pipe curves around or follows the contour of the shell from its entrance to a point near the opposite side of A series of perforations h are formed in the under side of the pipe and a few perforations i are formed in the upper side or wall of the pipe. These perforations serve to admit air into the helmet, the air being supplied with a force sufiicient to prevent gases '0r dustfrom enteringfrom the bottom of the helmet and to supply fresh air, to' the wearer. The pipe G extends from the helmet to a belt H on the waist of the person wearing the helmet and is there connected to a valve or cut off cock I to which is connected one end of a flexible hose pipe J which leads to a source of compressed air supply. The location of the source of air supply depends on the kindof tank or reservoir.

Around the bottom of the shella cape L is secured in any manner. from one edge of thedoorway to the other, and is attached to the door by hooks m. so that it swings open when the latter is; opened. Thecape L assists in excluding gases, smoke, etc., andthe imptire air escapes from the helmet head of the wearer, and the whole is supi under the cape. An outsidecape M is se- 4 p Patented Oct. 6, 1914.

Application filed December 27, 1912. Serial No. 738,947.

cured to the flange n of the shell to cover the shouldersof the wearer as shown in Fig.

l in'dotted lines.

In order to protect the neck of the wearer from the entering currents of air, a collar extending upto the ears and around the neckunder the chin should be worn, and any tlius described my invention What part of the present in ing and heving a" laterally extending flange surrounding such opening, a capeattached to the inner side of the helmet in line with the opening and adapted to encircle the neck of the wearer and a second cape secured to l the lower portion of the helmet by means of: the exterior flange thereof and adapted to envelop the shoulders of the wearer. A

In testimony whereof, I aflix my signature, in the presence of tivo Witnesses.

' GEORGE B. SPARKS. Witnesses:

. GEORGE BAILEY, HOWARD MOORE. 

